Button



(No Model.)

J. MGBRIDE.

` BUTTON. No. 249,781. Patented N0 v.'22,1881.

NrTnn STATES PATENT @Trina JAMES MGBRIDE, OF ITHACA, NET YORK.

BUTTON.

SPECIFICATION forming part of Letters Patent No. 249,781, dated November l22, 1881. Application filed September 12, 1881. (No model.)

To all whom it may concern:

Be it known that I, JAMES MCBRIDE, a citizen of the United States, residing at Ithaca, Tompkins county, N ew York, have invented an Improved Button for Wearing-Apparel, of which the following is a specification.

My invention relates to a button which is held to the cloth, leather, or similar material to which it is applied by a screw-shank, and especially to a screw-head made with sides that can be grasped by the tingers of the one who applies the button, and to a clampingcollar, and to roughnesses made on the screw head or knob and on the clamping-collar.

The parts oi' my invention will be apparent as I describe them.

Figures l are sectional elevations of my button; Fig. 2, a view of the under or face side ot' the screw-head; Fig. 3, a view of the top or cloth face ofthe screw head or knob, showing roughnesses on it; and Fig. 4is a view of the under side of the button-collar.

In the figures, a is the button proper or button-head, with the burr b fast in it, and about the burr is a broad collar, c. The burr and collar are preferably made of metal and the button of plastic material pressed in a mold about the burr and its collar; and d is the cloth or article to which the button is fastened, which isl punctured by the screw e. A screw-head, f, as large as or larger than the collar c, is beneath the cloth. The insertion of the screw into the burr and the tightening ot' it clamps the cloth between the collar and the screw head or knob. The screw-head is smooth on its lower or face side, with its edges rounded or smoothed off-two sides longer than the other two sides, as seen in Figs. 2 and 3. This is for the purpose of enabling the fingers of the person applying it to grasp it, and thus turn the screw into the burr. Various shapes of this screw-head-as that of a star, diamond, lozenge shapes, or other formsmight be shown; but they all would exhibit the one intent-to make such a screw-head as will enable the button to be applied and the clamping of the cloth done with no other appliances than the iingers of the operator.

The purpose of the collar c is to give a broad clasping-suriaee and prevent the wear ot' the cloth by the usual small shank of the button,

since all broad bearings wear less than small ones.

There are represented in Figs. 3 and i certain elevated lines, f' and c. These are for the intention of making friction on the cloth, so that the button shall not loosen.

It will be noticed that on the screw-head or clasping-knob are two elevations, f', and that they are parallel to each other and at some distance from each other on two sides of the screw-shank, and that on the collar c there are four such elevations or elevated lines, c', which commence just one side of the opening for the screw, and that each extends to the circumference of the base of the collar. Each two corresponding ones are parallel to each other, and each two thus parallel to each other are at right angles to the other two. The eiect of this construction is that when the clasping knob or head is turned, at the iinal turnin gs, the elevations f' ride over the elevations c and fall between the elevations c', as indicated in Fig. 4. This is for the purpose of making the ends of the elevations j" lock on the sides of the elevations c as to some, and a suflicient extent they will do, through the intervening cloth, thereby making unintentional turning less liable to occur, while intentional. turning is readily effected. Several other forms of such lockings might be shown; but theintent is obvious.

The difference between Fig. l and Fig. l@ is in the groove of Fig. l on the burr b for the plastic material to enter and hold the button proper to the burr. In Fig. 1rh a bulge in the burr is shown for the same purpose; also, slight diii'erences in holding the collar to the burr are shown in the two figures; but the plan is the same in both. Fig. 4 shows the plan of the base elevations on the collar. The dotted lines show one of the two positions the elevations of the head or knob assumes when the roughened surfaces are screwed together. All other matters are believed to be sufiiciently apparent to those skilled in the art to which it appertains.

I claimv 1. The screw-head f, having elevations f', in combination with a button-head, a, whose base c is provided with the elevations c', whereby a button is constructed with rough- IOO ened surfaces next the cloth, which look into each other as the screw is tightened, as set forth.

2. The button-head a, burr b, and collar c, 5 in combination with the headed screw-bolt f, provided with elongated and angled ends, and having elevations j", the said collar c having corresponding elevations c', which look into those of the button-head base, and by which elongated and angled ends the button is 1o screwed fast and looked to the material to which :it is attached, substantial] y as set forth. JAMES MCBRIDE. Witnesses:

S. J. PARKER, J. A.KINGr. 

